Source Data Reference for:

City = Calakmul
Time = 800

City Year Size Size Comment Year Comment Author Title Location
Calakmul700 200,000"Classic Period, zenith btw 500 & 850"Rough GuideMexicop763
Calakmul700 50,000Mario Perez Campa - Laura Sotelo SantosThe Mayas: the splendour of a great culturep108